package com.franke.session.checkcode;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.dsna.util.images.ValidateCode;

public class EServlet extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//1 生成验证码
		ValidateCode code = new ValidateCode(200, 80, 4, 100);
		//2 将验证码保存到session中
		System.out.println(code.getCode());
		request.getSession().setAttribute("code",  code.getCode());
		//3 将验证码图片输出到 浏览器
		response.setContentType("image/jpeg");
		code.write(response.getOutputStream());
		
	}

}
